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Naming Compounds with Polyatomic Ions

 

Polyatomic Ions- are molecules made up of 2 or more atoms that are considered an ionic group, that is, a molecule with a charge.

These form compounds that will contain both ionic and covalent bonds.

Table of Polyatomic Ions

 

Rules-

Compounds have a first and a last name.

1. Name the cation (+ ion) first (watch for NH4+…ammonium)

2. Name the anion (- ion) second …that is it

(no prefixes…except dichromate) 

(hydrogen carbonate is also called bicarbonate)

(hydrogen sulfate is also called bisulfate)

Highlight to reveal the names of the formulas

Formula Name
AlPO4 aluminum phosphate
KNO2 potassium nitrite
NaHCO3 sodium hydrogen carbonate
CaCO3 calcium carbonate
Mg(OH)2 magnesium hydroxide
Na2CrO4 sodium chromate
Ba(CN)2 barium cyanide
K2SO4 potassium sulfate
NaH2PO4 sodium dihydrogen phosphate
NH4NO3 ammonium nitrate
Sn(NO3)2 tin(II) nitrate
FePO4 iron(III) phosphate
Cu2SO4 copper(I) sulfate
Ni(C2H3O2)2 nickel(II) acetate
HgCO3 mercury(II) carbonate
Pb(OH)4 lead(IV) hydroxide
Cu2Cr2O7 copper(I) dichromate
Cu(ClO3)2 copper(II) chlorate
FeSO4 iron(II) sulfate
Hg2(ClO4)2 mercury(I) perchlorate
KClO3 potassium chlorate
SnSO4 tin(II) sulfate
Al(MnO4)3 aluminum permanganate
Pb(NO3)2 lead(II) nitrate
Mg3(PO4)2 magnesium phosphate
CuH2PO4 copper(I) dihydrogen phosphate
CaHPO4 calcium hydrogen phosphate
Fe(HCO3)3 iron(III) hydrogen carbonate
Na2CO3 sodium carbonate
MnSO4 manganese(II) sulfate
Ca(ClO3)2 calcium chlorate
Fe(OH)3 iron (III) hydroxide
Cu2SO4 copper(I) sulfate
KMnO4 potassium permanganate
NaOH sodium hydroxide
Fe(NO3)2 iron (II) nitrate

Naming Covalent Compounds   Naming Binary Ionic Compounds  Polyatomic Ions Naming with Polyatomic Ions  Naming with Roman Numerals  Formula Writing  Naming Acids

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